Rear Panel Controls And Functions; Power Input Connector; Antenna - Lectrosonics IFBT4-VHF Quick Start Manual

Rear Panel Controls and Functions

IFBT4 VHF Rear Panel
XLR Jack
A standard XLR female jack accepts a variety of input sources depending on the
setting of the rear panel MODE switches. XLR pin functions can be changed to
suit the source depending on the positions of the individual switches. For detailed
information on the setting of these switches see the owner's manual.
MODE Switches
The MODE switches
allow the IFBT4 VHF
to accommodate a
variety of input
source levels by
changing the input
sensitivity and the
pin functions of the
input XLR jack.
Marked on the rear
panel are the most
common settings.
Each setting is
detailed below.
Switches 1 and 2
adjust the XLR pin
functions while switches
3 and 4 adjust the input sensitivity.

Power Input Connector

The IFBT4 VHF is designed to be used with the DCR12/A5U (or equivalent)
power source. The nominal voltage to operate the unit is 12 VDC, although it
will operate at voltages as low as 6 VDC and as high as 18 VDC.
External power sources must be able to supply 200 mA continuously.

Antenna

The ANTENNA connector is a standard 50 ohm BNC connector for use with
standard coaxial cabling and remote antennas.
6
Switch
Positions
Name 1 2 3 4
q q q p
CC
p p p q
MIC
p p q q
LINE
p q q q
RTS1
q q q q
RTS2
XLR Pins Balanced
3 = Audio No
1 = Common
2 = Hi Yes
3 = Lo
1 = Common
2 = Hi Yes
3 = Lo
1 = Common
2 = Hi No
1 = Common
3 = Hi No
1 = Common
LECTROSONICS, INC.
Input
Sensitivity
-10 dBu
-42 dBu
0 dBu
0 dBu
0 dBu